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Geoscience ›› 2022, Vol. 36 ›› Issue (02): 515-523.DOI: 10.19657/j.geoscience.1000-8527.2021.184

• Water Resources and Environmental Research • Previous Articles     Next Articles

Application of CSAMT in Geothermal Exploration in Hui’an, Fujian Province

REN Xiaoqing1(), YU Hong2(), LUO Naning3, LI Chaomin4, WANG Qiyu5   

  1. 1. SINOPEC Green Energy Geothermal Development Co., Ltd.,Baoding,Hebei 071800, China
    2. Fujian Fourth Geological Brigade, Ningde,Fujian 352100, China
    3. Shaanxi Coal Geology Investigation Research Institute Co.,Ltd.,Xi’an,Shaanxi 710021, China
    4. 104 Geological Team, Guizhou Bureau of Geology and Mineral Exploration and Development, Duyun, Guizhou 558000, China: 5.Center of chengdu,China Geological Survey,Chengdu,Sichuan 610081,China
  • Received:2021-09-18 Revised:2021-11-20 Online:2022-04-10 Published:2022-06-01
  • Contact: YU Hong

Abstract:

This study attempts to solve the local hot spring bath water problem by conducting geothermal water exploration in Julong Town (Hui’an County, Quanzhou City), Fujian Province. This area contains mainly late Yanshanian feldspar granite. This study uses the Controlled Source Audio Magnetotelluric Method (CSAMT). Starting with deep structural analysis, a total of six CSAMT exploration lines are arranged, with 166 measurement points and a total length of 3.96 km. After collecting, processing, inverting, and interpreting the field data, three fault structures were identified, along with four low-resistance zones with possible water cut. Burial depth of the aquifer system in the area was also determined. Accordingly, a geothermal well (1,150 m deep) was excavated, yielding 600 m3/d water output and 34 ℃ water temperature, which supports the CSAMT results for geothermal water exploration in granite areas.

Key words: CSAMT, geothermal exploration, geothermal, Huian

CLC Number: